﻿/*********************************************************************
 * 最近做了一个绿色免安装软件，领导临时要求加个注册机制，不能让现场工程师随意复制。事出突然,只能在现场开发（离开现场软件就不受我们控了）。花了不到两个小时实现了简单的注册机制，稍作整理。
        基本原理：1.软件一运行就把计算机的CPU、主板、BIOS、MAC地址记录下来，然后加密（key=key1）生成文件；2.注册机将该文件内容MD5加密后再进行一次加密(key=key2)保存成注册文件；3.注册验证的逻辑，计算机信息加密后（key=key1）加密md5==注册文件解密（key=key2）；
另外，采用ConfuserEx将可执行文件加密；这样别人要破解也就需要点力气了（没打算防破解，本意只想防复制的），有能力破解的人也不在乎破解这个软件了（开发这个软件前后只花了一周时间而已）；
        技术上主要三个模块：1.获取电脑相关硬件信息(可参考)；2.加密解密；3.读写文件；
 * https://blog.csdn.net/weixin_37691493/article/details/79716050 
 * C#软件授权、注册、加密、解密模块源码解析并制作注册机生成license
 * Decrypt
 * Title :  获取电脑相关硬件信息代码
 * 
 **********************************************************************/

using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;
//硬件信息 using System.Management;
using System.Management;

namespace LicenseGenerateToolV1
{
    public class ComputerInfo
    {
        public static string GetComputerInfo()
        {
            string info = string.Empty;
            string cpu = GetCPUInfo();
            string baseBoard = GetBaseBoardInfo();
            string bios = GetBIOSInfo();
            string mac = GetMACInfo();
            info = string.Concat(cpu, baseBoard, bios, mac);
            return info;
        }

        private static string GetCPUInfo()
        {
            string info = string.Empty;
            info = GetHardWareInfo("Win32_Processor", "ProcessorId");
            return info;
        }
        private static string GetBIOSInfo()
        {
            string info = string.Empty;
            info = GetHardWareInfo("Win32_BIOS", "SerialNumber");
            return info;
        }
        private static string GetBaseBoardInfo()
        {
            string info = string.Empty;
            info = GetHardWareInfo("Win32_BaseBoard", "SerialNumber");
            return info;
        }
        private static string GetMACInfo()
        {
            string info = string.Empty;
            info = GetHardWareInfo("Win32_BaseBoard", "SerialNumber");
            return info;
        }
        private static string GetHardWareInfo(string typePath, string key)
        {
            try
            {
                ManagementClass managementClass = new ManagementClass(typePath);
                ManagementObjectCollection mn = managementClass.GetInstances();
                PropertyDataCollection properties = managementClass.Properties;
                foreach (PropertyData property in properties)
                {
                    if (property.Name == key)
                    {
                        foreach (ManagementObject m in mn)
                        {
                            return m.Properties[property.Name].Value.ToString();
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                //这里写异常的处理    
            }
            return string.Empty;
        }
        private static string GetMacAddressByNetworkInformation()
        {
            string key = "SYSTEM\\CurrentControlSet\\Control\\Network\\{4D36E972-E325-11CE-BFC1-08002BE10318}\\";
            string macAddress = string.Empty;
            try
            {
                NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();
                foreach (NetworkInterface adapter in nics)
                {
                    if (adapter.NetworkInterfaceType == NetworkInterfaceType.Ethernet
                        && adapter.GetPhysicalAddress().ToString().Length != 0)
                    {
                        string fRegistryKey = key + adapter.Id + "\\Connection";
                        RegistryKey rk = Registry.LocalMachine.OpenSubKey(fRegistryKey, false);
                        if (rk != null)
                        {
                            string fPnpInstanceID = rk.GetValue("PnpInstanceID", "").ToString();
                            int fMediaSubType = Convert.ToInt32(rk.GetValue("MediaSubType", 0));
                            if (fPnpInstanceID.Length > 3 &&
                                fPnpInstanceID.Substring(0, 3) == "PCI")
                            {
                                macAddress = adapter.GetPhysicalAddress().ToString();
                                for (int i = 1; i < 6; i++)
                                {
                                    macAddress = macAddress.Insert(3 * i - 1, ":");
                                }
                                break;
                            }
                        }

                    }
                }
            }
            catch (Exception ex)
            {
                //这里写异常的处理    
            }
            return macAddress;
        }  
    }
}
